[RKDinOKC]

Yeah, Exchange online works fine if you can change your organization and functionality to fit Microsoft's model and don't ever have to troubleshoot anything. AND if you have to use a hybrid environment running both Office365 and you local server because you have hundreds of users to migrate, sharing inboxes and calendars between users and things like rooms and shared mailboxes don't work across both servers, oh boy what a great email environment.